A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Variations in carbon dioxide fluxes within a city landscape: Identifying a vehicular influence
Abstract To date, studies examining carbon dioxide ($ CO_{2} $) fluxes in urban areas have been limited compared to those in rural environments. The objectives of our study were to examine the relationship between traffic volume and $ CO_{2} $ fluxes. We demonstrated that $ CO_{2} $ fluxes were strongly linked with surrounding land use, specifically impervious surfaces and traffic volume. A site near downtown Syracuse in New York State (USA) had relatively constant positive fluxes (source: +39 μmol $ CO_{2} $ $ m^{−2} $ $ s^{−1} $) throughout the year as a result of strong vehicular traffic influence from two nearby interstate highways. There was a strong positive relationship between traffic and $ CO_{2} $ fluxes ($ r^{2} $ = 0.93, p < 0.0001) with marked differences between the weekend days versus the workweek days. In contrast, a residential site in Syracuse was dominated by vegetative influences during the leaf-on period due to $ CO_{2} $ uptake by photosynthesis, reaching a maximum negative mean diurnal flux of −11 μmol $ CO_{2} $ $ m^{−2} $ $ s^{−1} $ around midday (sink). The spatial variations of $ CO_{2} $ fluxes identify the critical role played by local traffic volumes in affecting the $ CO_{2} $ dynamics of urban environments. Understanding the dynamic fluxes of $ CO_{2} $ in urban environments has important implications for local, regional and global evaluations of $ CO_{2} $ budgets and inventories, and carbon cycle and climate modeling.
Variations in carbon dioxide fluxes within a city landscape: Identifying a vehicular influence
Abstract To date, studies examining carbon dioxide ($ CO_{2} $) fluxes in urban areas have been limited compared to those in rural environments. The objectives of our study were to examine the relationship between traffic volume and $ CO_{2} $ fluxes. We demonstrated that $ CO_{2} $ fluxes were strongly linked with surrounding land use, specifically impervious surfaces and traffic volume. A site near downtown Syracuse in New York State (USA) had relatively constant positive fluxes (source: +39 μmol $ CO_{2} $ $ m^{−2} $ $ s^{−1} $) throughout the year as a result of strong vehicular traffic influence from two nearby interstate highways. There was a strong positive relationship between traffic and $ CO_{2} $ fluxes ($ r^{2} $ = 0.93, p < 0.0001) with marked differences between the weekend days versus the workweek days. In contrast, a residential site in Syracuse was dominated by vegetative influences during the leaf-on period due to $ CO_{2} $ uptake by photosynthesis, reaching a maximum negative mean diurnal flux of −11 μmol $ CO_{2} $ $ m^{−2} $ $ s^{−1} $ around midday (sink). The spatial variations of $ CO_{2} $ fluxes identify the critical role played by local traffic volumes in affecting the $ CO_{2} $ dynamics of urban environments. Understanding the dynamic fluxes of $ CO_{2} $ in urban environments has important implications for local, regional and global evaluations of $ CO_{2} $ budgets and inventories, and carbon cycle and climate modeling.
Variations in carbon dioxide fluxes within a city landscape: Identifying a vehicular influence
Buckley, Shannon M. (author) / Mitchell, Myron J. (author) / McHale, Patrick J. (author) / Millard, Geoffrey D. (author)
Urban Ecosystems ; 19
2014
Article (Journal)
Electronic Resource
English
Urban land use , Residential , Carbon dioxide , Traffic , Carbon monoxide , Urban , Trees , Vegetation
BKL:
43.31
Naturschutz
/
42.90$jÖkologie: Allgemeines
/
43.31$jNaturschutz
/
42.90
Ökologie: Allgemeines
/
74.12
Stadtgeographie, Siedlungsgeographie
/
74.12$jStadtgeographie$jSiedlungsgeographie
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